Engraving-machine.



V. BOYLE.

. ENGRAVING MACHINE.

V APPLIOATION FILED AUG. 9, 1905. 933, 344 Patented Sept. 7, 1909.

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' V. BOYLE. ENGRAVING MAUHINE.

APPLICATION FILED AUG. 9, 1905.

933,344. Patented Sept. 7. 1909.

2 SHEETS-MEET 2.

ANDREW- GMHIM 09- PHOTU-UTIIOGMVKERR WASHINGTON. l1 0- UNITED STATESVERNON BOYLE, OF PATSERSON, NEW JERSEY.

-ENGRAV1NG-MACHINE; Y

Specification of Letters Patent. 7

Patented Sept. 1909.

Application filed. August 9, 1905. Serial No. 273,357.

To all whom it may concern:

Be it known that I, VERNON BOYLE, a citizen of the United States, andresident of Paterson, in the county of Passaic and State of New.Jersey,have 1nvented anew and useful Engraving-Machine, of which thefollowing is a specification.

My invention relates to an engraving ma chineand more particularly-to abeveler for use in lining photo-engravure plates.

Theobject is to provide a simple and effective adjustment forterminating the out at the corner at a point corresponding to thedistance of the line from the edge of the plate; to provide accuratemeans for clamping plates of different width of shoulder in position onthe table, and for setting the cutter at a zero point or point of originat.

any desired distance from the edge of the plate.

My invention further consists in certain features of construction andcombination of parts as will be hereinafter described and i w of a shoe18 through which the point of the pointed out in the claims.

In the accompanying drawings, Figure 1 is a top plan view of the toolshow ing in dotted lines the position Which" the plate occupies whenclamped in position to be operated upon, Fig. 2 is a transverse sectionin the plane of the line AA of Fig. 1, Fig. 3 is a view in sideelevation, Fig. 4: is an enlarged horizontal section of the cutter headsupport in the plane of the line 13-13 of Fig. 3, Fig. 5 is aVBItlCitl'SQCtlOll of the same in the plane of theline GC of Fig. 3,Fig. 6 is a view in detail showing the cutter head in side elevation,Fig. 7 is a View in detail showing the plate holding dog in its.

position in the table and Fig. 8 is an en larged sectional view of theclampfor holding the plate in position. I

The base of the tool is denoted as a whole by 1 and is supported uponshort legs 2, one

located at each of its four corners, the section of the base 1 towardthe operator being utilized as a tray 3 the top of the remaining portionas a plate supporting table 4'.

Along oneside of the base a 5 extends serving'as a guide for thecutter-head carrier and said, bar is conveniently connected rigidly withthe base by means of arms 6 and 7 extending laterally from thebase andprovided with suitable bearings for receiving the ends of the bar'5".

The cutter'head carrier consists of a sleeve .-with' a recess 12extending diagonally across itfor' the reception of 'the'shank of thetool 13 and the tool is held tightly clamped to the head by meansof'thesegment 14 mounted in swinging adjustment on the shank of a screw 15,the latter being provided with a nurled head 16 and tapped into thecutter head for the purpose of pressing the segment Hftightly againstthe tool when the latter has been adjusted in its recess. in the face ofI. the cutter head. The cutter head 11 is locked against rotation in itssleeve 9 by means of a pin 17 extending through it into the end of the,sleeve 9.

= .The'depth of cut is determined by means cutter-13 projects, the saidshoe being provided-with a screw threaded shank 19 eX- tending' upwardlytherefrom through the cutter head and provided with a nurled nut 20'arranged thereon, the nut being seated a slot 21 formed in the disk andof such width", that the nut 20 shall have a close rotating fitjintheslot preventing any lost motion either up or down and hence whenturned raising or lowering the shank 19 of the shoe and holding it inits proper relation tothe point of the cutter to determine the depth ofcut. The shoe 18 is prevented from rotative displacement by means of apin 22 extending upwardly from its heel into a hole formed in the bottomof the cutter head.

The cutter head with the tool thereon is adjusted bodily inwardly andoutwardly over the edge of the plate resting on the table by means ofadifferential screw arrangement as follows i+A screw 23 is tapped .intothe ,end ofjthe-shank 10 of the cutter j head and is'pr'ovided'with ashoulder or collar24 thereon against which a sleeve 25 abuts. v

The sleeve 25 is provided with a hub 26 which fits on the shank of-thescrew 23 immediately outside of thecollar 24 while the sleeve 25 propersurrounds the end of the supporting sleeve 9 and ,has ,an internal screwthread 27 which engages with an external screw thread 28 on the exteriorof the end of the sleeve 9,

' As the shank of thescrew 23 extends outwardly from the hub 26 it isprovided with an operating head 29 keyed thereon as, for example, thewell known feather and groove so that it may be permitted alongitudinally sliding movement with respect to the shank of the screwwhile at the same time causing the screw to rotate together with it.

The head 29 is intended to abut against the hub 26 of the sleeve 25.

The shank of the screw 23 extends outwardly from the head 29 and isscrew threaded as at 30 to receive a lock nut 31, the latter, whenscrewed on, serving to force the head 29 .against the hub 26 of thesleeve 25 and hence lock it to the screw 23'so as to cause the screw 23to turn together with the sleeve 25. When, however, the lock nut 31 isreleased from the head 29, the said head may be turned and hence thescrew 23 turned without moving the sleeve 25.

At the inner edge of the sleeve 25 there is formed a scale 32 offractions of an inch and on the sleeve 9 in proximity to the scale thereis formed a fixed pointfor example a zero point from which themeasurement on the scale may be estimated, so that the cutter head 11may be moved to locate the cutter 13 at any desired distance from theedge of'the plate while thesleeve 25 is held at zero by simply looseningthe nut 31 and turning the screw 23 by-means of its head 29 withoutturning the sleeve 25 and when the zero position, be it nearer orfartherfrom the edge of the plate as desired, is determined upon, the screw ,23may be locked to the sleeve 25 by screwing up the nut 31 so that thefurther turning of the screw 23 to adjust the cutter head in or out willalso turn the sleeve 25 and hence the scale thereby indicating ust thedesired distance that the line is to be made from a preceding line orfrom the edge of the plate.

To make the adjustment accurate, I prefer to make the pitch of thethread on the screw 23 different from that on the sleeve 25, forinstance if the pitch 011 the screw 23 be one-tenth the pitch of thethread on the sleeve 25 might be one-twentieth so that the effect of thescrew 23 on the cutter head would be reduced one-half in whicheverdirection it be turned as the one would work the cutter head in onedirection while the other would tend to carry it bodily in the oppositedirection.

For the purpose of stopping the cutting of the tool at the same distancefrom the edge of the plate, towardwhich the cut .is made, as the linebeing cut is from the edge of the plate parallel therewith, I locate an.adjustable stop 33 on the bearing connected with thearm 7, the said stopbeing provided with a face set at an angle-of 15 to its edge and with anelongated slot which receives a tongue 36 projecting upwardly from thebearing on the arm 7.

An adjusting screw 37 passes through the end of the stop 33 and alongwithin the slot 35 and is tapped into the end of the tongue 36 forforcing the stop 33 in one direction, viz; toward the cutter carryingsleeve while a spring 38 located between the end of the tongue 36 andthe end of the slot serves to force the stop 33 away from the cuttercarrying sleeve whenever the stop 33 is turned in a direction to permitits movement.

A screw 39 is tapped into the top of the tongue 36 for the purpose ofclamping the stop in its adjusted position.

A tapered pin 10 is carried by the shank of the cutter head to coactwith the stop 33, the angle of the tapered end of the pin 10 being suchthat only its point will engage the face 31 of the stop. In the presentinstance I have shown the pin 10 as having a nurled exterior 11 andprovided with a screw threaded bore 12 for the reception of the end of ascrew 13, the said screw 13 being tapped into the shank of the cutterhead as at 11 and extending thence outwardly through an elongated slot1-5 in the side of the sleeve 9. I have also shown a lock nut 16 engagedwith the thread of the screw 13 at the base of the pin 10 for looking itin such adjustment as may be desired.

In operation, whatever be the adjustment of the cutter head and cuttercarried thereby, away from or toward the edge of the plate beingoperated upon, the pin 10 will be carried bodily thereby and because ofthe 15 angle of the face 31 of the stop 33, the end of the pin 10 willmeet the oblique face 31 at a point earlier or later to stop the cuttingaction .at just that point where the line at the adjacent edge of theplate should meet it and this stopping of the cutter at the proper pointwill be automatically taken care of after the tool is once adjustedwhatever be the adjustment of the cutter head to make the initial linenearer to or farther away from the edge.

A clamp for receiving the edge of the plate consists, preferably ofthree parts, viz; a base 1? an intermediate part 18 and a top part 19.The base 17 is a thin plate of metal or other suitable material, theintermediate part 18 is a thin piece of spring metal or other suit-ablematerial capableof yielding under pressure and is wider than the base 17while the top part 19 is a strip of less width than the intermediatepart 18 in order to leave the latter free to spring up; wardly and isused to bind the intermediate part 18 to the base 17. A number of screws50 pass through the three parts and into the table to hold the clamp inposition.

In operation, the edge of the plate is pushed underneath theintermediate part 48 of the clamp causing the latter to spring upwardlyand finally engage the shoulder at plate and suflicient to permit anyplate with wider or narrower shoulder tobeslipped beneath theintermediate part until the shoulder engages the edge of the said part,which position insures the correct position of the plate for operation.V

To hold the plate againstmovement in the direction in which the cutteroperates, I provide a simple dog 50 with a narrow mouth 52 formed in itshead, the said dog being cylindrical in shape and dropped into a socket53 formed in the table. Its shape is i such that the dog is free to-rockto adjust the mouth 52 squarely to the edge of the plate.

Vihat I claim is 1. The combination with the tool holder, its supportalong which it moves and on which it rocks and means for supporting theplate in position to be operated upon, of a stop for arresting theadvance movement of the tool holder at the proper distance from the edgeof the plate.

2. The combination with the tool holder, its support along which itmoves and on which it rocks and means for supporting the plate inposition to be operated upon, of an adjustable stop for arresting theadvance movement of the tool holder at the proper distance from the edgeof the plate.

3. The combination with the tool holder, the support along which itmoves and on which it rocks and means for supporting a plate in positionto be operated upon, of a stop for arresting the advance movement of thetool holder and an adjustable tapered pin connected with the tool holderfor coacting with the stop.

4. The combination with a tool. holder, a support along which it movesand on which it rocks and means 'for supporting a plate to be operatedupon, of means for'adjusting the tool holder horizontally toward andaway from the edge of the plate.

5. The combination with a tool holder support, a bar along which ittravels during the action of the tool, and means for holding the'work inposition to be operated upon, of a tool holder comprising a diskprovided with a seat for the tool and'a stem projecting laterally fromthe sidefof the disk, the said stem having a sliding engagement with thetool holder support and means for securing the stem to the tool holdersupport in diflerent adjustments.

6. The combination with a tool holder support, a tool holder mounted toslide along and rock on thesupport, means for supporting a plate to beoperated upon beneath the endof the tool holder and means for adjustingthe tool holder horizontally toward and away from the edge of the platealong which it moves, of apin fixed to move with the tool holder and aninclined face stop for engaging the pin whatever he the horizontaladjustment of the tool holder to arrest the tool holder at the properdistance from the edge ing.

7. The combination with a support for the plate to be operated upon anda bar located along the said support, of a tool holder supportcomprisinga sleeve arranged to slide along the bar and a transverse sleeve, a toolholder having its shank seated in the transverse sleeve and means foradjusting the tool holder in said sleeve to carry the tool horizontallytoward and away from the edge of the. plate, a slot in said transversesleeve, a pin connected with the tool holder shank through said slot anda stop for engaging the pin at the limit of the advance movement of thetool holder.

8. The combination with the tool holder and the sleeve in which it ismounted, of a screw engaged with the tool holder for adjusting it withrespect to the sleeve and a second screw engaged with the sleeve andwith the aforesaid screw, the said screws being arranged to operate thetool holder in opposite directions when turned in the same direction andhaving threads of different pitch.

9. The combination with the tool holder and the sleeve within which itis mounted, of a screw engaged with the tool holder and provided with asliding head, an interiorly screw threaded sleeve having its hub engagedwith the screw and its screw thread engaged with an exterior thread onthe first sleeve and a nut engaged with the screw for locking the saidsecond sleeve to the screw and releasing it therefrom whereby the sleeveand screw may be caused to rotate together or independently at pleasure.

10. The combination with the cutter holder having a head provided with arecess in its face and a cutter seated in the recess, of a segment forholding the cutter in place and ascrew tapped into the cutter holder andforming a support for the segment for clamping the segment to the head.

11. The combination with a cutter holder provided with a slot thereinand means for holding the cutter thereon, of a shoe for of the platetoward which the tool is travel- 12. The combination with the plate supporting table and means for supporting a cutter in position to operateon the plate, of a plate clamp, the said clamp including a strip ofresilient material, and means for securing one edge of the saidresilient strip to the table, while the opposite edge of the said stripis free to spring upwardly into position to engage a shoulder at the topof the beveled edge of a plate.

, 13. The combination with the plate support and means for supporting acutter in position to operate thereon, of a table a plate clampincluding a thin strip of material in immediate contact with the tableand a strip of resilient material of greater width than the aforesaidstrip superposed on the aforesaid strip in position to engage theshoulder at the top of the beveled edge of the plate.

1%. The combination with a support for the plate and means forsupporting a cutter in position to operate on the plate, of a plateclamp comprising a lower member, an upper member and an intermediatemember, the said intermediate member being of greater width than theupper and lower members and of resilient material and screws for bindingthe several members to the support.

15. The combination with a plate supporting table and means forsupporting a cutter in position to operate on the plate, of a plateclamp secured to the table and adapted to engage the beveled edge of theplate, the said clamp being provided with an overhanging jaw, the edgeof which is in position to engage the shoulder at the top of the bevelat the edge of the plate, the said engaging edge of the jaw beinglocated farther from the body of the clamp than the normal width of thebevel portion. of the plate.

In testimony, that I claim the foregoing as my invention, I have signedmy name in presence of two witnesses, this 20th day of July, 1905.

VERNON BOYLE.

lVitnesses JOHN RoyLn, G120. REvoLn.

